Concealed operating mechanism for casement-windows.



I A. W. SIMPSON. CONCEALED OPERATING MECHANISM FOR CASEMENT WINDOWS. APPLICATION FILED MAR. 31. 1917 1 ,%4I9 %g0; Patented Dec. 4, 1917.

2 8HEETSSHEET I.

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APPLICATION FILED MR. 3!. 1917- v LMQQQOQ Patented Dec. 4,1917.

2 SHEETS-SHEET 2.

ALFRED-WILLIAM sI '1vr1 so1\T,oru:erE-n iuciv'rctain, NEW JERSEY.

GONCEALED OPERATING MECHANISM son cAsEMENT-wnvmws.

I Application filed March 31, 1917. Serial No. 158,950.

To all whom itmag) concern: I l Be it known; that ,I, ALFRED WILLIAM S IMPso a citizen of therUnited States, reslding in Upper Montclair, in the county of Essex and State ofNew Jersey, have invented; certain new and useful Improvements in Concealed Operating Mechanism for Casement-Windows,j ffwhichthe following is va full and "clear, specification. i

p The ob ct ofthepresentinvention isto provide slmpleand efiectivemeans entirely concealed from, view, foroperating casement windows. It has been proposed to provide partially concealed operating mechanism for such windows, butsocfar as I am aware a completely concealed andsuccessfully operating m echanis1n for'casementwindows that .Will'fit in with the artistic: finish of a. room hasjnot; heretofore been produced; In the improved mechanism which I have (devised allparts ofthe mechanism extending from the pivoted hanging stiles of the vertically hung casement sash to the operating handle are entirely concealed from View, the handle alonebeing presented upon the inside of the window frame that is as inconspicuous as theiknob on audoor l The improyed; casement Window operating mechanism comprisesarms or levers rigidly 30 connected with -fand projecting from the lower pivot pintles ofth'e sashhanging stiles .(which, in the usual construction, 1 are supported; 1n closely fitting recesses 1n the W111 dQW frame), a centrallypivoted tubular lever, connected at its opposite ends through rods or links with the rock arms of the casement pintles and an extensible rod telescoping with said pivoted tubularlever I and formed at its inner end with a detent which cqoperateswith a suitable stationary rack and: has atyits outer end a suitable knob 'or handle presented through a slot in the apron of-the-window sill in convenient positionfor operation. All of, the parts of the described mechanism excepting-only the handle are mounted below the sillof the windowframe, entirely concealed from view.

,The locking rack and" cooperating dog or Tdetentare of peculiar construction, the rack having forwardly presented angular teeth separated by downwardly expanding dovetailed recesses, while the locking dog or detent is shaped to snugly fitthe dove-tailed e se i ng of doveta ledh pe i? W- tical cross section, with an angular nose to properly guide, it into engagement with the selected locking recess of the rack.

, ,Inorder that myinvention may be fully Specification of Letters Patent. Patented Deg, 41,, 191% i understood it will first be described with ref erence to the] accompanying drawings and afterward pointed out more particularly in the annexed claims.- :,,Figui e1 is an inside elevation of window frame equipped with a pair of outwardly opening vertically hung ,casement windows tonwhich invention has been applied;

; TFig.-f2 is an. enlarged horizontal sectional view'showing the improved concealed operating mechanism for the same. In this view the Windows are shown in top plan, while the sill of the frame is entirely removed to expose the improved operating mechanism;

,Fig. 3 is a detail plan view, partly in section, of the main portion of the operating mechanism, this view being on astill larger 7 scale for the purpose of clearness;

Figs. 4: and 5 are detail sectional views of I parts hereinafter referred to.

outwardly opening casement windows 5, 10, {kite-hung upon thelr hanging stlles by means ofpivot pintles projcctlng above and below I In the window frame shown at 1, the two I: i

andl-having bearings, asusual, in suitable sockets sunlrin the top and bottom rails of thewindow frame. Theside railsof the window frame are recessed, as shown at 2, in Fig. 2, to snugly fit around the angular edges of the hanging stiles.

Suitably secured to the downwardly projecting pivot pintles of the sashes 5 and 10 are rock arms indicated at 15 and 16, to which are respectively connected the rigid rods or links20 and 21, pivoted at 25 and 26, upon the open ended tubular lever member 30.: Thismember 30, which constitutes a double. lever for operating the connected casement windows is preferably formed with a central bracket lugr3l, having a pivot pin 32, projecting from it midway between the ends of the tubularmember 30. This pivot 32 is properlyjournaled in an opening formed in abracket plate 35, having secure to it a locking rack 36, hereinafter more specifically described. p I

The tubular lever 30 carries extensionrod .410, which telescopes with the member 30 and ,ispreferably provided with a stop pin 4 1,] operating. in a longitudinal slot 33, of

' operator.

member 30, to limit the movement of the rod 40 outwardly in member 30. A spring 44 may be mounted between the rod 40 and tubular member 30, as shown; in Fig. 3, to afford a slight resistance to the relative movement between these parts so that the. rod will remain where it is placed by the The outer end of the extension rod 40 is formed with a knob or handle d5 which may be integral with the rod 4:0 or be detachably secured thereto like the ordinary door knob is secured to its shank.

The bracket plate 35 is formed with, the curved rack 36 having a series of ribs or teeth 36 formed with outwardly presented angular noses and separated by recesses 36 of corresponding shape, but of clove-tailed cross section with the widening of the re cesses extending downwardly. from the upper face of the rack. The inner end of j the expansible rod 40 is shouldered down to form a locking dog or detent 43 of the size and shape to accurately fit the dove-tailed recesses 36"of the locking rack, so that the rod canbe pushed inwardly with the detent 43 projecting beyond theend of lever into engagement with the desired recess of the rack tohold the mechanism in the desired adj usted, position.

In the described mechanism the bracket 35, carrying the rack 36 and supporting the pivoted operating mechanism is suitably mounted in the base of the window frame directly beneath the window sill, the eXtensible rod 4-0 projecting through .a horizontally arranged slotted escutcheon plate 50, fastened in the. apron of the sill, as shown. When arranged in this manner the only part of the mechanism, which is in view is the knob or handle uponthe' operating rod and the face of the cscutcheon plate, through which it operates. a The operation of the mechanism will be understood from the following explanation:

In Figs. 1 and 2 of the drawings the windows are shown open approximately 45. In this position the operating mechanism is in its central location. If it is desired to close the windows, the operator grasps the handle 45 and pulls the rod 40 outwardly to disengage the dog -13 from locking recesses 36 of therack. "When the rod is pulled out to its limit to release the mechanism and afford an extended lever. the operator pushes the lever to the right, causing the two windows to be closed, and then pushes the rod 4-0 inwardly until the dog 43 engages a new notch in the locking rack when the mechanism will besecurely held with the window closed. With this mechanism the windows can be securely held in any desired position whether fully open, fully closed or at any point between these extremes. Because of the effectiveengagement between the locking dog and rack (the engaging parts being dove-tailed) there is no danger ofthe mechanism coming loose nor of the windows rattling by reason of the wind. The arrangement of allthe operating mechanism below the window sill, enables the architect to embody this highly artistic casement window in his design without interference or marring by the use of clumsy operating mechanisms and attachments which have heretofore been employed in connection with such windows. The operating handle 45 upon the rod 40 maybe of any suitable shape or design'to fit and correspond with the finish of other hardware, like the door knob, forinstance. I

I have shown the mechanism arranged for a pair of outwardly opening casement windows, but it will be clear-that a single'win V dow can readily be operated by the improved mechanism, 1n which case one of the connecting rods 20 or 21 andits attached rock vice, rod and rock arm being concealed in the window frame.

2. In a device of the character described, the combination with a pair of outwardly opening casement windows pivoted upon their hanging stiles, of rock arms projecting from the window pivots, rods pivotally connected with said rock arms, a pivoted operating lever pivotally connected with said rods, means for locking said lever against movement, said rock arms,'rods, operating lever and locking meansbeing concealed within the window frame, and an operating handle projecting from said operating lever through the window frame. 7

3. In a device of the character described,

the combination of a suitable bracket plate formed with a locking rack, an. open ended tubular lever pivotallymounted upon said bracket plate, an extension rod telescoping with said tubular lever and formed-at one end with a dog or detent projecting normally beyond the end of the lever andadapted to engage said rack, said extension rod "having at its other end an operating handle, a pivotally mounted window, and operating mech- 1 anism extending from said window-to said tubular lever.

at. In a device of the character described, the combination of apivotally mounted'tw bular lever, alocking rack fixed with relaand said dog or detent being of dove-tailed tion to said leveryan extension rod tellescopcross-section to fit said recesses, a pivotally ing With said tubular lever and formed at mounted Window and operating mechanism 10 one end with a dog or detent adapted to en extending from said Window to said tubular 5 gage said rack and at its other end With an lever.

operating handle, said rackhaving a series of teeth separated by dove-tailed recesses ALFRED WILLIAM SIMPSON.

Copies of this patent may be obtained for five cents'each, by addressing the Commissioner of Patents,

' Washington, D. G. 

